WO2021160004A1

WO2021160004A1 - Data transmission method and device, terminal, and storage medium

Info

Publication number: WO2021160004A1
Application number: PCT/CN2021/075122
Authority: WO
Inventors: 左君
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2020-02-13
Filing date: 2021-02-03
Publication date: 2021-08-19
Also published as: CN113259064B; CN113259064A

Abstract

Disclosed in the present application are a data transmission method and device, a terminal, and a storage medium. The method comprises: a terminal receives a repeatedly sent physical downlink shared channel (PDSCH), wherein the number of transmissions is configured as N, and N is a positive integer greater than 1; send a hybrid automatic repeat request-acknowledgement (HARQ-ACK) on at least a first physical uplink control channel (PUCCH) in M configured PUCCHs, wherein M is a positive integer greater than 1, and the timeslot indexes of PUCCHs in the M PUCCHs other than the first PUCCH are determined by at least the timeslot index of the first PUCCH.

Description

Data transmission method, device, terminal and storage medium

Cross-references to related applications

This application is filed based on a Chinese patent application with an application number of 202010091747.8 and an application date of February 13, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this application.

Technical field

This application relates to the wireless field, and in particular to a data transmission method, device, terminal, and storage medium.

Background technique

The scheduling process of the downlink data in the communication system is shown in Figure 1. The base station sends data packets and receives the feedback Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK), that is, receives the feedback ACK/NACK. Wherein, if the base station receives a NACK, it indicates that the data transmission has failed, and the base station reschedules the data packet.

In normal data scheduling transmission, a single transmission cannot meet the high reliability requirements. Therefore, in order to enhance the reliability of transmission, the related technology of the new air interface (NR), as shown in Figure 2, proposes multiple physical time slots corresponding to multiple time slots. Downlink shared channel (PDSCH) repeated transmission technical solution.

However, the technical solution shown in FIG. 2 cannot meet the requirement of low time delay.

Summary of the invention

To solve related technical problems, embodiments of the present application provide a data transmission method, device, terminal, and storage medium.

The technical solutions of the embodiments of the present application are implemented as follows:

The embodiment of the present application provides a data transmission method, which is applied to a terminal, and includes:

Receive repeatedly sent PDSCH; the number of transmissions is configured as N, where N is a positive integer greater than 1;

Send HARQ-ACK on at least the first PUCCH in the configured M physical uplink control channels (PUCCH); where M is a positive integer greater than 1;

The time slot index of other PUCCHs in the M PUCCHs except the first PUCCH is determined by at least the time slot index of the first PUCCH.

In the above solution, the time slot index of the other PUCCH is determined by at least the time slot index of the first PUCCH and the offset value corresponding to the other PUCCH.

In the above solution, the offset value is configured through high-layer signaling or dynamically indicated by downlink control information (DCI).

In the above solution, the frequency domain resources of the M PUCCHs are the same or different.

In the above solution, the HARQ-ACK sent on the first PUCCH corresponds to one PDSCH or a partial number of PDSCHs among multiple PDSCHs; and/or, the HARQ-ACK sent on the Mth PUCCH and N PDSCHs correspond.

In the above solution, the method further includes:

Detect PDSCH;

Before the time slot where the first PUCCH is located, PDSCH detection is successful, and ACK is sent on the first PUCCH, and no information or ACK is sent on the other PUCCH.

In the above solution, one or part of the N PDSCHs is after the first PUCCH, and the method further includes:

No detection is performed on the one or part of the PDSCH.

In the above solution, the method further includes:

Detect PDSCH;

Before the time slot where the first PUCCH is located, PDSCH detection fails, NACK is sent on the first PUCCH, and HARQ-ACK and/or channel state information CSI are sent on the other PUCCH.

An embodiment of the present application also provides a data transmission device, including:

The receiving unit is configured to receive repeatedly sent PDSCH; the number of transmissions is configured to N, where N is a positive integer greater than 1;

The sending unit is configured to send HARQ-ACK on at least the first PUCCH of the configured M PUCCHs; where M is a positive integer greater than 1;

The embodiment of the present application also provides a terminal, including: a processor and a communication interface; wherein,

The communication interface is configured as:

Send HARQ-ACK on at least the first PUCCH of the configured M PUCCHs; where M is a positive integer greater than 1;

An embodiment of the present application also provides a terminal, including: a processor and a memory configured to store a computer program that can run on the processor,

Wherein, the processor is configured to execute the steps of any of the foregoing methods when running the computer program.

The embodiment of the present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the foregoing methods are implemented.

According to the data transmission method, device, terminal and storage medium provided by the embodiments of the present application, the terminal receives repeatedly transmitted PDSCH; the number of transmissions is configured as N, where N is a positive integer greater than 1; at least the first of the configured M PUCCHs HARQ-ACK is sent on two PUCCHs; where M is a positive integer greater than 1; the time slot index of other PUCCHs in the M PUCCH except the first PUCCH is determined by at least the first PUCCH time slot index Since the HARQ-ACK sent by the first PUCCH does not need to wait for all PDSCH detections to be completed, it will effectively reduce the HARQ-ACK feedback delay.

Description of the drawings

Figure 1 is a schematic diagram of downlink data scheduling in related technologies;

Fig. 2 is a schematic diagram of the repeated sending process of downlink data in the related technology;

FIG. 3 is a schematic flowchart of a data transmission method according to an embodiment of this application;

4 is a schematic diagram of a repeated transmission process of multiple data blocks according to an embodiment of the application;

FIG. 5 is a schematic diagram of a multi-data repeated transmission process according to an application embodiment of this application;

FIG. 6 is a schematic diagram of another multiple data repeated transmission process according to an application embodiment of this application;

FIG. 7 is a schematic structural diagram of a data transmission device according to an embodiment of the application;

FIG. 8 is a schematic diagram of a terminal structure according to an embodiment of the application;

Fig. 9 is a schematic structural diagram of a data transmission system according to an embodiment of the application.

Detailed ways

The application will be further described in detail below in conjunction with the drawings and embodiments.

In the technical solution for repeated transmission of multiple PDSCHs, the repeated transmission of multiple PDSCHs may be implemented through downlink control information (DCI) dynamic scheduling, or through semi-persistent scheduling (SPS). When the transmission is dynamically scheduled, the terminal will determine the PUCCH time-frequency resources corresponding to the multiple PDSCH transmissions according to the indication in the DCI for ACK/NACK feedback.

As shown in Figure 2, in the technical solution of multiple PDSCH repeated transmissions in the related technology, regardless of the number of PDSCH transmissions, only one HARQ-ACK is fed back to the base station. That is to say, no matter how many times the PDSCH is configured, the terminal will only Feed back a HARQ-ACK to the base station. Therefore, the terminal needs to detect all PDSCHs sent, that is, after all PDSCH detections are completed, will it feedback HARQ-ACK. Therefore, the uplink (UL) time slot used to feed back HARQ-ACK should be It is configured to have an interval between the time slots corresponding to the last PDSCH, that is, the HARQ-ACK feedback time slot is after the transmission time slot corresponding to the last PDSCH to ensure the processing of all PDSCHs.

In the fifth-generation mobile communication technology (5G) NR system, it supports ultra-reliable low-latency (uRLLC) services. For uRLLC services, it is considered that: on the one hand, the use of repeated transmission technical solutions can enhance the reliability of uRLLC service transmission; on the other hand, if the data packet is not correctly detected, it will cause the data retransmission delay to be large. Meet the requirements of low latency. Therefore, in the related art, multiple data blocks are repeatedly sent and a shorter HARQ-ACK timeline configuration is used to support uRLLC service requirements. However, the current service type supported by uRLLC is small data packets. When a larger data packet is transmitted based on uRLLC, multiple PDSCH repeated transmissions as shown in Figure 2 can be used. When the repeated transmission of multiple PDSCHs as shown in FIG. 2 is adopted, since the HARQ-ACK feedback time slot is after the transmission time slot corresponding to the last PDSCH, the time delay of the HARQ-ACK feedback is greatly increased. At the same time, since all PDSCH detections are required to be completed before the HARQ-ACK can be fed back, the complexity of terminal detection will also be greatly improved. At the same time, multiple large data packets will be detected at the same time, and the decoding delay will also increase correspondingly.

Based on this, in various embodiments of the present application, M PUCCHs are configured to feed back HARQ-ACK, and HARQ-ACK is sent on at least the first PUCCH of the M PUCCHs; where M is a positive integer greater than 1. .

In the solution provided by the embodiments of this application, since the HARQ-ACK sent on the first PUCCH does not need to wait for all PDSCH detections to be completed, that is, the HARQ-ACK sent on the first PUCCH is not for all PDSCHs, so the delay will be effectively reduced .

The data transmission method provided by the embodiment of the present application, which is applied to a terminal, as shown in FIG. 3, includes the following steps:

Step 301: Receive the repeated PDSCH;

Here, the number of PDSCH transmissions is configured as N, and N is a positive integer greater than 1.

Step 302: Send HARQ-ACK on at least the first PUCCH among the configured M PUCCHs.

Among them, M is a positive integer greater than 1;

Among them, the configured M PUCCHs are used to send HARQ-ACK.

In practical applications, the values of N and M can be determined as required.

The index of the time slot where the first PUCCH is located may be determined by dynamic scheduling or SPS dynamic activation of the HARQ feedback timer (HARQ-feedback-timer) indication field in the DCI.

In an embodiment, the slot index of the other PUCCH is determined by at least an offset value of the slot index of the first PUCCH and an offset value corresponding to the other PUCCH.

Wherein, in actual application, when the time slot of other PUCCHs determined by the offset value of the time slot index of the first PUCCH and the corresponding offset value cannot carry PUCCH (for example, the determined time slot is a downlink time slot , Or the number of uplink symbols is not enough, or conflicts with other higher priority channels, etc.), the time slot where the other PUCCH is located can be postponed to after the time slot determined according to the time slot index and offset value of the first PUCCH The time slot that can carry the other PUCCH.

The other PUCCH refers to: the second PUCCH, the third PUCCH, and so on.

In practical applications, in order to reduce the feedback delay, the time slot where the first PUCCH is located can be configured more forward, effectively reducing the feedback delay.

Based on this, in an embodiment, the time slot in which the first PUCCH is located may be located before the last time slot of the multiple time slots occupied by the repeated PDSCH transmission.

In practical applications, the terminal may obtain the offset value through a configuration on the network side.

Based on this, in an embodiment, the method may further include:

The offset value is determined through high-layer signaling configuration or DCI dynamic indication.

That is, the offset value is configured through high-layer signaling or dynamically indicated by DCI.

Wherein, in actual application, the high-level signaling may be radio resource control (RRC) signaling, or media access control (MAC) signaling, etc.

The offset value refers to the slot offset value. In actual application, the offset value reserves the PDSCH detection delays corresponding to the other PUCCHs. In this way, it can be ensured that the terminal can perform subsequent processing according to the PDSCH detection results corresponding to the first PUCCH, which can achieve a high probability This reduces the detection complexity and energy consumption of the terminal.

In actual applications, resources need to be configured for M PUCCHs, and the configured resources include time domain resources and frequency domain resources. Among them, the time domain resources of the configured M PUCCHs are different; specifically, the M PUCCHs are located in different time slots, so as to effectively reduce the transmission delay; and the frequency domain resources of the M PUCCHs can be the same or can be different.

For the HARQ-ACK sent on the first PUCCH, it is not necessary to wait for all PDSCH detections to be completed. Therefore, the HARQ-ACK sent on the first PUCCH can be combined with one PDSCH or a partial number of PDSCHs among multiple PDSCHs. Corresponding; correspondingly, the HARQ-ACK sent on the Mth PUCCH corresponds to the N PDSCHs.

Exemplarily, assuming that N is 2 and M is 2, the first HARQ-ACK is sent on the first PUCCH, and the first HARQ-ACK corresponds to the transmission of the first PDSCH; the first HARQ-ACK is sent on the second PUCCH. Two HARQ-ACKs; the second HARQ-ACK corresponds to the transmission of two PDSCHs.

Wherein, the multiple PDSCHs refer to N PDSCHs.

In practical applications, PDSCH needs to be detected, and ACK or NACK is fed back according to the detection.

Based on this, in an embodiment, the method may further include:

Detect PDSCH;

According to the detection result, ACK is sent on the first PUCCH, and no information or ACK is sent on the other PUCCH.

Specifically, before the time slot where the first PUCCH is located, PDSCH detection is successful, and ACK is sent on the first PUCCH, and no information or ACK is sent on the other PUCCH.

Here, in actual application, after the PDSCH corresponding to the first PUCCH is successfully detected, the terminal may not detect the subsequent PDSCH. In this way, the complexity of terminal detection can be greatly reduced.

Based on this, in an embodiment, one or part of the N PDSCHs is after the first PUCCH, that is, the time slot in which the first PUCCH is located is located in multiple PDSCHs occupied by repeated PDSCH transmissions. Before the last time slot of the time slot, no detection is performed on the one or part of the PDSCH.

That is, the terminal cancels the detection and decoding operations on one or a part of the PDSCH, and does not feed back information on the other PUCCH, or continues to feed back ACK on the other PUCCH.

Here, in actual application, after the terminal feeds back the ACK on the first PUCCH, it can be configured whether to feed back the ACK on the other PUCCH. Wherein, when the terminal is configured to feed back ACK on the first PUCCH, and feed back ACK on the other PUCCH, the reliability of ACK feedback can be effectively improved, that is, the reliability of ACK transmission can be enhanced.

After the network side (ie, the base station) receives the ACK, it confirms that the data has been sent successfully.

Correspondingly, after the PDSCH corresponding to the first PUCCH fails to be detected, PDSCHs corresponding to other PUCCHs are detected, thereby greatly reducing the complexity of terminal detection.

Wherein, in an embodiment, the terminal sends NACK on the first PUCCH and sends HARQ-ACK and/or CSI on the other PUCCH according to the detection result.

Specifically, before the time slot where the first PUCCH is located, PDSCH detection fails, and NACK is sent on the first PUCCH, and HARQ-ACK and/or CSI are sent on the other PUCCH.

Before the time slot where the first PUCCH is located refers to: before the time of the time domain resource where the first PUCCH is located.

Before the first PUCCH, the PDSCH detection failed, which means that the modulation and coding method selected at this time, that is, the modulation and coding strategy (MCS) no longer matches the current channel, so the terminal can feed back CSI information on other PUCCHs, which can facilitate The base station quickly adjusts the MCS to improve the reliability of subsequent data transmission.

In practical applications, the PUCCH for sending the CSI information may be at least one PUCCH other than the first PUCCH in the configured PUCCH.

The transmitted CSI may at least include channel state indicator (CQI) information.

Exemplarily, assuming that N is 2 and M is 2, as shown in Figure 4, the first HARQ-ACK is sent on the first PUCCH, and the first HARQ-ACK corresponds to the transmission of the first PDSCH; The second HARQ-ACK is sent on two PUCCHs; the second HARQ-ACK corresponds to the transmission of two PDSCHs, and the offset value of the slot index of the first PUCCH and the slot index of the second PUCCH is 2 Gap. Among them, it is determined whether to send HARQ-ACK on the second PUCCH according to the detection result of the PDSCH.

It should be noted that the first PUCCH, the second PUCCH, etc. of the configured M PUCCHs are described from the perspective of the time axis. According to the time sequence, the first PUCCH sent is the first PUCCH, and the second PUCCH is The PUCCH sent is the second PUCCH, and so on. In other words, the time slot where the first PUCCH is located is earlier than the time slot where other PUCCHs in the M PUCCH except the first PUCCH are located, that is, the time slot where the first PUCCH is located is where each PUCCH of the M PUCCHs is located. The earliest time slot.

In the data transmission method provided by the embodiment of the present application, the terminal receives repeatedly sent PDSCH; the number of transmissions is configured as N, where N is a positive integer greater than 1, and HARQ-ACK is sent on at least the first PUCCH of the configured M PUCCHs Wherein, M is a positive integer greater than 1; among the M PUCCHs, except for the first PUCCH, the slot index of the other PUCCH is at least determined by the slot index of the first PUCCH, because the first PUCCH is sent The HARQ-ACK does not need to wait for all PDSCH detection to be completed, therefore, it will effectively reduce the HARQ-ACK feedback delay.

The application will be further described in detail below in conjunction with application examples.

Application Example One

In this application embodiment, the base station side configures PDSCH repeated transmission to increase transmission reliability. As shown in Figure 5, the number of times of configuring PDSCH transmission is 4, and the number of PUCCH feedback is configured 2 times, that is, 2 PUCCHs are configured to send HARQ-ACK, including the first PUCCH (ie PUCCH#0) and the second PUCCH ( That is, PUCCH#1). Wherein, the time slot in which the first PUCCH is located can be located before the last time slot of the multiple time slots occupied by the repeatedly transmitted PDSCH. In this way, the feedback delay can be effectively reduced.

Among them, the slot index of the first PUCCH can be determined according to the traditional method, that is, the HARQ-feedback-timer indicator field in the DCI can be determined by dynamic scheduling or SPS dynamic activation; the slot index of the second PUCCH is determined according to the first The index of the time slot where the PUCCH is located and the time slot offset value indicated by the higher layer or DCI signaling are determined. In this application embodiment, the offset value is 3 time slots.

The process of data transmission and transmission in this application embodiment includes:

Step 1: The base station repeatedly transmits data blocks four times on PDSCH#0, PDSCH#1, PDSCH#2, and PDSCH#3;

Step 2: The terminal detects data of at least one data block among the repeatedly sent data blocks;

Step 3: The terminal successfully detects the data before the time of the time domain resource where the first PUCCH is located, the terminal sends an ACK on the first PUCCH, and no longer detects and decodes the remaining undetected data blocks;

Step 4: The base station receives the ACK;

Step 5: The terminal does not send ACK/NACK information on the second PUCCH.

As can be seen from the above description, in this application embodiment, two PUCCHs are used to feed back HARQ-ACK; wherein, after the ACK is fed back on the first PUCCH, the transmission of the second PUCCH is cancelled.

Application Example Two

In this application embodiment, the base station side configures PDSCH repeated transmission to increase transmission reliability. As shown in Figure 6, the number of PDSCH transmission is configured to 4 times, and PUCCH feedback is configured 2 times, that is, 2 PUCCHs are configured to send HARQ-ACK, including the first PUCCH (ie PUCCH#0) and the second PUCCH ( That is, PUCCH#1). Wherein, the time slot in which the first PUCCH is located can be located before the last time slot of the multiple time slots occupied by the repeatedly transmitted PDSCH. In this way, the feedback delay can be effectively reduced.

Wherein, the slot index of the first PUCCH can be determined according to the traditional method, that is, it can be determined by dynamic scheduling or SPS dynamic activation of the HARQ-feedback-timer indicator field in the DCI; the slot index of the second PUCCH is determined according to the first PUCCH The time slot index and the time slot offset value indicated by the higher layer or DCI signaling are determined. In this application embodiment, the offset value is 3 time slots.

Step 3: The terminal does not successfully detect the data packet before the time of the time domain resource where the first PUCCH is located, that is, the detection fails, and the terminal sends a NACK on the first PUCCH;

Step 4: The base station receives NACK;

Step 5: The terminal continues to perform detection and decoding operations on the remaining data blocks that are not detected;

Step 6: The terminal data is successfully detected, ACK is fed back on the second PUCCH, and CSI information (including CQI) is fed back at the same time.

Here, the failure of the first detection (detection in step 3) means that the currently adopted MCS level is too high, and the base station can reschedule or configure according to the CSI information fed back by the terminal to achieve more accurate data transmission.

Step 7: The base station detects the second PUCCH, obtains the ACK, confirms that the data is successfully sent, and obtains the CSI information.

As can be seen from the above description, in this application embodiment, two PUCCHs are used to feed back HARQ-ACK; among them, NACK is fed back on the first PUCCH, and ACK and CSI information are fed back on the second PUCCH.

In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a data transmission device, which is set on a terminal. As shown in FIG. 7, the device includes:

The receiving unit 71 is configured to receive repeatedly transmitted PDSCH; the number of transmissions is configured to be N, where N is a positive integer greater than 1;

The sending unit 72 is configured to send HARQ-ACK on at least the first PUCCH of the configured M PUCCHs; where M is a positive integer greater than 1;

Wherein, in an embodiment, the device may further include:

The determining unit is configured to determine the slot index of the other PUCCH at least according to the slot index of the first PUCCH.

Wherein, in an embodiment, the determining unit is configured to:

The time slot index of the other PUCCH is determined by at least the index of the time slot where the first PUCCH is located and the offset value corresponding to the other PUCCH.

Wherein, in an embodiment, the determining unit is further configured to determine the offset value through high-layer signaling configuration or DCI dynamic indication.

In an embodiment, the receiving unit 71 is configured to detect PDSCH;

The sending unit 72 is configured to send ACK on the first PUCCH according to the detection result, and not send information or send ACK on the other PUCCH.

In an embodiment, the sending unit 72 is configured to:

Wherein, in an embodiment, the receiving unit 71 is configured to successfully detect the PDSCH before the first PUCCH, and one or a part of the PDSCHs in the plurality of PDSCHs (N) are in the first PUCCH. After one PUCCH, no detection is performed on the one or part of the PDSCH.

In an embodiment, the sending unit 72 is configured to:

According to the detection result, NACK is sent on the first PUCCH, and HARQ-ACK and/or CSI are sent on the other PUCCH.

In an embodiment, the sending unit 72 is configured to:

Before the time slot where the first PUCCH is located, PDSCH detection fails, NACK is sent on the first PUCCH, and HARQ-ACK and/or CSI are sent on the other PUCCH.

Wherein, in an embodiment, the receiving unit 71 is configured to fail the PDSCH detection before the first PUCCH, and one or a part of the PDSCHs among the plurality of PDSCHs (N) are in the first PUCCH. After one PUCCH, the one or part of the PDSCH is detected.

That is, after detecting the PDSCH corresponding to the first PUCCH fails, the receiving unit 71 detects PDSCHs corresponding to other PUCCHs.

In actual applications, the receiving unit 71 and the sending unit 72 can be implemented by a processor in a data transmission device in combination with a communication interface; the determining unit can be implemented by a processor in the data transmission device.

It should be noted that when the data transmission device provided in the above embodiment performs data transmission, only the division of the above-mentioned program modules is used as an example for illustration. In actual applications, the above-mentioned processing can be allocated by different program modules as needed. That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the data transmission device provided in the foregoing embodiment and the data transmission method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

Based on the hardware implementation of the program modules described above, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal. As shown in FIG. 8, the terminal 80 includes:

The communication interface 81 can exchange information with the network side;

The processor 82 is connected to the communication interface 81 to implement information interaction with the network side, and when configured to run a computer program, execute the method provided by one or more technical solutions on the terminal side; and the computer program is stored in the memory 83 on.

Specifically, the communication interface 81 is configured as:

Wherein, in an embodiment, the processor 82 is configured to determine the slot index of the other PUCCH at least according to the slot index of the first PUCCH.

Wherein, the processor 82 is configured to:

In an embodiment, the processor 82 is further configured to determine the offset value through high-layer signaling configuration or DCI dynamic indication.

In an embodiment, the processor 82 is configured to:

Detect PDSCH;

Based on the detection result, an ACK is sent on the first PUCCH through the communication interface 81, and no information is sent or an ACK is sent on the other PUCCH.

In an embodiment, the processor 82 is configured to:

Before the time slot where the first PUCCH is located, PDSCH detection is successful, and ACK is sent on the first PUCCH through the communication interface 81, and no information or ACK is sent on the other PUCCH.

Wherein, the processor 82 is configured to detect the PDSCH successfully before the first PUCCH, and one or a part of the multiple PDSCHs (N) are after the first PUCCH, The one or part of the PDSCH is not detected.

In an embodiment, the processor 82 is configured to:

According to the detection result, NACK is sent on the first PUCCH, and HARQ-ACK and/or CSI are sent on the other PUCCH through the communication interface 81.

Wherein, in an embodiment, the processor 82 is configured to:

Before the time slot where the first PUCCH is located, PDSCH detection fails, and NACK is sent on the first PUCCH through the communication interface 81, and HARQ-ACK and/or CSI are sent on the other PUCCH.

Wherein, in an embodiment, the processor 82 is configured to fail PDSCH detection before the first PUCCH, and one or a part of the PDSCHs among the plurality of PDSCHs (N) are in the first PUCCH. After one PUCCH, the one or part of the PDSCH is detected.

That is, after detecting the PDSCH corresponding to the first PUCCH fails, the processor 82 detects PDSCHs corresponding to other PUCCHs.

It should be noted that the specific processing process of the processor 82 and the communication interface 81 can be understood with reference to the above method.

Of course, in actual application, the various components in the terminal 80 are coupled together through the bus system 84. It can be understood that the bus system 84 is configured to implement connection and communication between these components. In addition to the data bus, the bus system 84 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 84 in FIG. 8.

The memory 83 in the embodiment of the present application is configured to store various types of data to support the operation of the terminal 80. Examples of these data include: any computer program used to operate on the terminal 80.

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 82 or implemented by the processor 82. The processor 82 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 82 or instructions in the form of software. The aforementioned processor 82 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like. The processor 82 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. Combining the steps of the method disclosed in the embodiments of the present application, it may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 83. The processor 82 reads the information in the memory 83 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the terminal 80 may be configured by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), complex programmable logic device (CPLD, Complex Programmable Logic Device, Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components Implemented and configured to perform the aforementioned method.

It can be understood that the memory 83 in the embodiment of the present application may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read- Only Memory, Electrically Erasable Programmable Read-Only Memory (EEPROM), Ferromagnetic Random Access Memory (FRAM), Flash Memory, Magnetic Surface Memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be magnetic disk storage or tape storage. The volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (SRAM, Static Random Access Memory), synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), and dynamic random access memory. Memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Type synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), synchronous connection dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, Direct Rambus Random Access Memory) ). The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a data transmission system. As shown in FIG. 9, the system includes: a network device 91 and a terminal 92; wherein,

The network device 91 is configured to repeatedly send PDSCH to the terminal 92, and the number of PDSCH transmissions is configured to be N, where N is a positive integer greater than 1.

The terminal 92 is configured to receive the PDSCH repeatedly sent by the network device 91; and send HARQ-ACK on at least the first PUCCH of the configured M PUCCHs; where M is a positive integer greater than 1; M The index of the time slot of the PUCCH other than the first PUCCH is determined by at least the index of the time slot of the first PUCCH.

Here, in actual application, the network device 91 may be a base station, such as a next-generation node B (gNB).

It should be noted that the specific processing procedure of the terminal 92 has been described in detail above, and will not be repeated here.

In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, such as a memory 83 storing a computer program, which can be used by the processor of the terminal 80. 82 execute to complete the steps described in the aforementioned terminal-side method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

It should be noted that the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

The above are only preferred embodiments of the present application, and are not used to limit the protection scope of the present application.

Claims

A data transmission method applied to a terminal, including:

Receive the repeated physical downlink shared channel PDSCH; the number of transmissions is configured as N, where N is a positive integer greater than 1;

Send a hybrid automatic repeat request acknowledgement HARQ-ACK on at least the first PUCCH of the configured M physical uplink control channels PUCCH; where M is a positive integer greater than 1;

The time slot index of other PUCCHs in the M PUCCHs except the first PUCCH is determined by at least the time slot index of the first PUCCH.
The method according to claim 1, wherein the time slot index of the other PUCCH is determined by at least the time slot index of the first PUCCH and the offset value corresponding to the other PUCCH.
The method according to claim 2, wherein the offset value is configured through high-layer signaling or dynamically indicated by downlink control information DCI.
The method according to claim 1, wherein the frequency domain resources of the M PUCCHs are the same or different.
The method according to claim 1, wherein the HARQ-ACK sent on the first PUCCH corresponds to one PDSCH or a partial number of PDSCHs among the multiple PDSCHs; and/or, the HARQ-ACK sent on the Mth PUCCH HARQ-ACK corresponds to N PDSCHs.
The method according to claim 1, wherein the method further comprises:

Detect PDSCH;

Before the time slot where the first PUCCH is located, PDSCH detection is successful, and ACK is sent on the first PUCCH, and no information or ACK is sent on the other PUCCH.
The method according to claim 6, wherein one or part of the N PDSCHs is after the first PUCCH, and the method further comprises:

No detection is performed on the one or part of the PDSCH.
The method according to claim 1, wherein the method further comprises:

Detect PDSCH;

Before the time slot where the first PUCCH is located, PDSCH detection fails, NACK is sent on the first PUCCH, and HARQ-ACK and/or channel state information CSI are sent on the other PUCCH.
A data transmission device includes:

The receiving unit is configured to receive repeatedly sent PDSCH; the number of transmissions is configured to N, where N is a positive integer greater than 1;

The sending unit is configured to send HARQ-ACK on at least the first PUCCH of the configured M PUCCHs; where M is a positive integer greater than 1;

The time slot index of other PUCCHs in the M PUCCHs except the first PUCCH is determined by at least the time slot index of the first PUCCH.
A terminal including: a processor and a communication interface; among them,

The communication interface is configured as:

Receive repeatedly sent PDSCH; the number of transmissions is configured as N, where N is a positive integer greater than 1;

Send HARQ-ACK on at least the first PUCCH of the configured M PUCCHs; where M is a positive integer greater than 1;

The time slot index of other PUCCHs in the M PUCCHs except the first PUCCH is determined by at least the time slot index of the first PUCCH.
A terminal includes: a processor and a memory configured to store a computer program that can run on the processor,

Wherein, the processor is configured to execute the steps of the method according to any one of claims 1 to 8 when running the computer program.
A storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are realized.